RDFa in XHTML is a W3C Recommendation

The W3C Semantic Web Deployment Working Group and the XHTML2 Working Group published the W3C Recommendation RDFa in XHTML: Syntax and Processing. This specification allows publishers to express structured data on the Web within XHTML, enabling a new world of user functionality, allowing users to transfer structured data between applications and web sites, and allowing browsing applications to improve the user experience. For those looking for an introduction to the use of RDFa and some real-world examples, please consult the updated RDFa Primer.